General Description. The HT is a serial timekeeper IC which provides seconds, minutes, hours, day, date, month and year information. HT datasheet, HT circuit, HT data sheet: HOLTEK – Serial Timekeeper Chip,alldatasheet, datasheet, Datasheet search site for Electronic. HTSOPLF from HOLTEK >> Specification: Timekeeper IC, Date Time Format (Date/Month/Year Technical Datasheet: HTSOPLF Datasheet.

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In total, 16 clock pulses are needed for a single byte mode and 72 for burst mode. There are eight registers used to control the month data, etc. Only three wires are required:. Download datasheet Kb Share this page.

For the most up-to-date information, please visit our web site at http: The Write Protect Register should be set first before restarting the system or before writing the new data to the system, and it should set as logic 1 in the read cycle. Only three wires are required: If used generally, unpredictable conditions may occur. The number of days in each month and leap years are automatically adjusted. Two data transmission modes: Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

Both input and output data starts with bit 0. Data can be de.

HTDIPLF (HOLTEK) PDF技术资料下载 HTDIPLF 供应信息 IC Datasheet 数据表 (1/10 页)

The value of the capacity depends on how accurate the crystal is This is to determine whether a read, write, or test cycle is operated and whether a single byte or burst mode transfer is to occur.


Then, choose either single mode or burst mode to input the data Refer to the suggestion table datasheett page 7. When this bit is in high level, the hour mode daasheet selected otherwise it? The clock halt bit must be set to logic 1 oscillator disabled.

Pad Description Pad No.

HT1381 PDF Datasheet浏览和下载

When this bit is written to logic 0, the clock will start. Maximum input serial clock: Copy your embed code and put on your site: Refer to the table shown below and follow the steps to write the data to the catasheet. Refer to the table shown below and follow the steps to write the data to the chip. This table illustrates the correlation between Command Byte and their bits: The value of the capacity depends on how accurate the crystal is.

Then, choose h1t381 single mode or burst mode to input the data. A Hz crystal is required to provide the correct timing.

However, Holtek assumes no responsibility arising from the use of the specifications described. Holtek reserves the right to alter its products without prior notification.

Refer to the suggestion table of page 7. Data contained in the clock register is in binary coded decimal format.

HT Datasheet pdf – Serial Timekeeper Chip (8SOP) – Holtek Semiconductor

The Write Protect bit cannot be written to in the burst mode. These are stress ratings only. The read or write operating flowcharts are shown on the next page.


Two modes are available for transferring the data between the microprocessor and the Command byte For each data transfer, a Command Byte is initiated to specify which register is accessed. Data can be de- livered 1 byte at a time burst bytes REST remains at high level.

These bits control the operation of the oscillator and so data can be written to the register array. Stresses exceeding the range specified under? When this bit is set to logic 1, the clock oscillator is stopped and the chip goes into a low-power standby mode.

HT1381-8DIPLF PDF Datasheet浏览和下载

In order to obtain the correct frequency, two additional load capacities C1, C2 are needed. A Hz crystal is required to. Additional SCLK cycles are ignored.

Only three wires are required: Data inputs are entered starting with bit 0. Data outputs are read starting with bit 0.

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The test mode is used by Holtek only for testing purposes. One is in single-byte mode ad the other is in multiple-byte mode.